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Rework DB session + transactions. Now can handle multiple read only transactions in parallel

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This commit is contained in:
emeric
2019-07-16 13:17:23 +02:00
parent 2a1fb0182b
commit 38ce2600d2
79 changed files with 1840 additions and 1369 deletions
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src/ui/admin/DatabaseSettingsView.cpp
+8 -8
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@@ -85,10 +85,10 @@ class DatabaseSettingsModel : public Wt::WFormModel
void loadData()
{
Wt::Dbo::Transaction transaction {LmsApp->getDboSession()};
auto transaction {LmsApp->getDbSession().createSharedTransaction()};
auto scanSettings {ScanSettings::get(LmsApp->getDboSession())};
auto similaritySettings {SimilaritySettings::get(LmsApp->getDboSession())};
const ScanSettings::pointer scanSettings {ScanSettings::get(LmsApp->getDbSession())};
const SimilaritySettings::pointer similaritySettings {SimilaritySettings::get(LmsApp->getDbSession())};
setValue(MediaDirectoryField, scanSettings->getMediaDirectory().string());
@@ -108,17 +108,17 @@ class DatabaseSettingsModel : public Wt::WFormModel
if (!clusterTypes.empty())
{
std::vector<std::string> names;
std::transform(clusterTypes.begin(), clusterTypes.end(),std::back_inserter(names), [](auto clusterType) { return clusterType->getName(); });
std::transform(clusterTypes.begin(), clusterTypes.end(), std::back_inserter(names), [](auto clusterType) { return clusterType->getName(); });
setValue(TagsField, joinStrings(names, " "));
}
}
void saveData()
{
Wt::Dbo::Transaction transaction {LmsApp->getDboSession()};
auto transaction {LmsApp->getDbSession().createUniqueTransaction()};
auto scanSettings {ScanSettings::get(LmsApp->getDboSession())};
auto similaritySettings {SimilaritySettings::get(LmsApp->getDboSession())};
ScanSettings::pointer scanSettings {ScanSettings::get(LmsApp->getDbSession())};
SimilaritySettings::pointer similaritySettings {SimilaritySettings::get(LmsApp->getDbSession())};
scanSettings.modify()->setMediaDirectory(valueText(MediaDirectoryField).toUTF8());
@@ -135,7 +135,7 @@ class DatabaseSettingsModel : public Wt::WFormModel
similaritySettings.modify()->setEngineType(_similarityEngineTypeModel->getValue(*similarityEngineTypeRow));
auto clusterTypes {splitString(valueText(TagsField).toUTF8(), " ")};
scanSettings.modify()->setClusterTypes(std::set<std::string>(clusterTypes.begin(), clusterTypes.end()));
scanSettings.modify()->setClusterTypes(LmsApp->getDbSession(), std::set<std::string>(clusterTypes.begin(), clusterTypes.end()));
}
private: